FIELD: ceramics.
SUBSTANCE: invention relates to a method for producing ceramic pigments for decoration of porcelain and faience articles and for staining ceramic masses and glazes. Mixture of mineral powder and chromophore solution in the concentration 4.0-15.6 g-ions/100 g of solution is subjected for hydrothermal treatment (autoclaving) at temperature 170-190°C and under pressure 0.8-1.2 MPa. Deposit is squeezed out, dried and roasted at temperature 950-1100°C. Mineral is taken among the group: diopside, wollastonite, tremolite and zeolite. Metal salts of 3-d subgroup of periodic system are used as chromophores. This method provides reducing the roast temperature of pigments as compared with the conventional one by 200-300°C and to enhanced their brightness due to the more intensive penetration of chromophore ions into mineral structure being at the stage of hydrothermal treatment. Prepared pigments are resistant to effect of high temperatures and melted glaze.
EFFECT: improved method for producing, improved properties of pigments.
3 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING OF CORDIERITE CERAMIC PIGMENT | 2006 |
|
RU2332366C1 |
| METHOD FOR PREPARING WOLLASTONITE-BASE CERAMIC PIGMENTS | 2002 |
|
RU2215715C1 |
| CHARGE FOR PRODUCTION OF CERAMIC PIGMENT OF BLUE-GREEN COLOUR | 2008 |
|
RU2358922C1 |
| PYROXENES-BASED INORGANIC PIGMENT AND A METHOD FOR PREPARATION THEREOF | 2004 |
|
RU2269553C2 |
| MIXTURE FOR PRODUCING BLUE-COLOURED CERAMIC PIGMENT IN CaO-MgO-SiO SYSTEM | 2009 |
|
RU2424988C1 |
| CHARGE FOR CERAMIC BLUE PIGMENT MAKING | 2000 |
|
RU2184101C2 |
| BLEND FOR PREPARING CERAMIC ORANGE-BROWN-COLOR PIGMENT | 2004 |
|
RU2255056C1 |
| MIXTURE FOR MAKING OLIVE-COLOURED CERAMIC PIGMENT WITH HELENITE STRUCTURE | 2009 |
|
RU2389697C1 |
| METHOD OF PRODUCING CERAMIC ALUMINIUM-COBALT OXIDE PIGMENT BASED ON NANO-SIZED MESOPOROUS SYNTHETIC XONOTLITE | 2010 |
|
RU2493185C2 |
| SILICA-BASED INORGANIC PIGMENT AND PREPARATION METHOD THEREOF | 2008 |
|
RU2404216C2 |
